What question did this study set out to answer?

To analyze and model double resonance experiments in which nuclear spin-spin coupling interactions in NMR spectra are perturbed by a strong radiofrequency field.

March 1, 1955Physical Review

Effects of Perturbing Radiofrequency Fields on Nuclear Spin Coupling

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Authors

ABArnold L. BloomIsrael Atomic Energy Commission JSJames Ν. ShooleryVarian Medical Systems (United States)

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Implication

Theoretical and experimental study demonstrates how strong radiofrequency fields perturb nuclear spin coupling in fluorine-19 and phosphorus-31, validating a rotating-frame analytical model.

Key Points

To analyze and model double resonance experiments in which nuclear spin-spin coupling interactions in NMR spectra are perturbed by a strong radiofrequency field.
Transformed the nuclear spin Hamiltonian into a rotating coordinate frame where all Hamiltonian terms remain stationary except for the weak probing radiofrequency field.
Calculated transition energies and spectral intensities within the rotating frame and transformed the spectrum back to the laboratory frame by adding a constant energy factor.
Conducted a double-resonance NMR experiment using fluorine-19 (F-19) and phosphorus-31 (P-31) nuclei to benchmark the mathematical predictions against empirical observations.
Theoretical framework successfully calculated the altered transition energies and intensities induced by the perturbing radiofrequency field.
Experimental spectral measurements from the fluorine-19 and phosphorus-31 nuclei demonstrated close quantitative agreement with the values computed from rotating-frame theory.

Cite This Study

Bloom et al. (1955) studied this question.

synapsesocial.com/papers/6a7c5ce6a2188deaa4c29913 https://doi.org/10.1103/physrev.97.1261

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Implication

Theoretical and experimental study demonstrates how strong radiofrequency fields perturb nuclear spin coupling in fluorine-19 and phosphorus-31, validating a rotating-frame analytical model.

Effects of Perturbing Radiofrequency Fields on Nuclear Spin Coupling

Discussion

Member takes

Implication

Key Points

Cite This Study

Effects of Perturbing Radiofrequency Fields on Nuclear Spin Coupling

Discussion

Member takes

Implication

Key Points

Cite This Study

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